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Coward-Smith M, Liong S, Oseghale O, Erlich JR, Miles MA, Liong F, Brassington K, Bozinovski S, Vlahos R, Brooks RD, Brooks DA, O’Leary JJ, Selemidis S. Low dose aspirin prevents endothelial dysfunction in the aorta and foetal loss in pregnant mice infected with influenza A virus. Front Immunol 2024; 15:1378610. [PMID: 38638436 PMCID: PMC11024306 DOI: 10.3389/fimmu.2024.1378610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 03/15/2024] [Indexed: 04/20/2024] Open
Abstract
Influenza A virus (IAV) infection in pregnancy resembles a preeclamptic phenotype characterised by vascular dysfunction and foetal growth retardation. Given that low dose aspirin (ASA) is safe in pregnancy and is used to prevent preeclampsia, we investigated whether ASA or NO-conjugated aspirin, NCX4016, resolve vascular inflammation and function to improve offspring outcomes following IAV infection in pregnant mice. Pregnant mice were intranasally infected with a mouse adapted IAV strain (Hkx31; 104 plaque forming units) and received daily treatments with either 200µg/kg ASA or NCX4016 via oral gavage. Mice were then culled and the maternal lungs and aortas collected for qPCR analysis, and wire myography was performed on aortic rings to assess endothelial and vascular smooth muscle functionality. Pup and placentas were weighed and pup growth rates and survival assessed. IAV infected mice had an impaired endothelial dependent relaxation response to ACh in the aorta, which was prevented by ASA and NCX4016 treatment. ASA and NCX4016 treatment prevented IAV dissemination and inflammation of the aorta as well as improving the pup placental ratios in utero, survival and growth rates at post-natal day 5. Low dose ASA is safe to use during pregnancy for preeclampsia and this study demonstrates that ASA may prove a promising treatment for averting the significant vascular complications associated with influenza infection during pregnancy.
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Affiliation(s)
- Madison Coward-Smith
- Centre for Respiratory Science and Health, School of Health & Biomedical Sciences, Royal Melbourne Institute of Techology (RMIT) University, Melbourne, VIC, Australia
| | - Stella Liong
- Centre for Respiratory Science and Health, School of Health & Biomedical Sciences, Royal Melbourne Institute of Techology (RMIT) University, Melbourne, VIC, Australia
| | - Osezua Oseghale
- Centre for Respiratory Science and Health, School of Health & Biomedical Sciences, Royal Melbourne Institute of Techology (RMIT) University, Melbourne, VIC, Australia
| | - Jonathan R. Erlich
- Centre for Respiratory Science and Health, School of Health & Biomedical Sciences, Royal Melbourne Institute of Techology (RMIT) University, Melbourne, VIC, Australia
| | - Mark A. Miles
- Centre for Respiratory Science and Health, School of Health & Biomedical Sciences, Royal Melbourne Institute of Techology (RMIT) University, Melbourne, VIC, Australia
| | - Felicia Liong
- Centre for Respiratory Science and Health, School of Health & Biomedical Sciences, Royal Melbourne Institute of Techology (RMIT) University, Melbourne, VIC, Australia
| | - Kurt Brassington
- Centre for Respiratory Science and Health, School of Health & Biomedical Sciences, Royal Melbourne Institute of Techology (RMIT) University, Melbourne, VIC, Australia
| | - Steven Bozinovski
- Centre for Respiratory Science and Health, School of Health & Biomedical Sciences, Royal Melbourne Institute of Techology (RMIT) University, Melbourne, VIC, Australia
| | - Ross Vlahos
- Centre for Respiratory Science and Health, School of Health & Biomedical Sciences, Royal Melbourne Institute of Techology (RMIT) University, Melbourne, VIC, Australia
| | - Robert D. Brooks
- Clinical and Health Sciences, University of South Australia, Adelaide, SA, Australia
| | - Doug A. Brooks
- Clinical and Health Sciences, University of South Australia, Adelaide, SA, Australia
| | - John J. O’Leary
- Discipline of Histopathology, School of Medicine, Trinity College Dublin, Dublin, Ireland
- Sir Patrick Dun’s Research Laboratory and the Trinity Translational Medicine Institute (TTMI), St. James’s Hospital, Dublin, Ireland
| | - Stavros Selemidis
- Centre for Respiratory Science and Health, School of Health & Biomedical Sciences, Royal Melbourne Institute of Techology (RMIT) University, Melbourne, VIC, Australia
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Nabasirye S, Baluka SA, Sengooba A. Prevalence and economic losses associated with foetal wastage in abattoir. Vet Med Sci 2024; 10:e1343. [PMID: 38227705 PMCID: PMC10790323 DOI: 10.1002/vms3.1343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 11/06/2023] [Accepted: 12/10/2023] [Indexed: 01/18/2024] Open
Abstract
BACKGROUND Both male and female food animals are slaughtered for meat. Some cows, ewes and does slaughtered are found with viable foetuses resulting in foetal wastage and loss of future replacement stock. Foetal wastage accounts for about 20%-25% of the decline in livestock numbers in sub-Saharan Africa. Slaughter of pregnant cows, ewes and does results in economic losses and threatens food security with consequent decrease in available animal proteins to the fast growing human population. Protein requirement for healthy human development is inadequate in most developing countries including Uganda. The prevalence and economic losses associated with foetal wastage were assessed in an abattoir. OBJECTIVES The study was cnducted to assess the prevalence of feotal wastage at the study abattoir and estimate the associated economic losses. METHODS The researchers supported by abattoir resident meat inspectors examined all slaughtered female animals during the study period. Gravid uteri obtained from slaughtered animals after dressing of carcasses were eviscerated using a sharp knife across the long axis to recover foetuses. The crown rump lengths (CRLs) of the recovered foetuses were measured using a tape measure, weighed on a scale and categorised into first, second and third trimesters. Prevalence of pregnant animals slaughtered was determined by calculating the percentage of pregnant animals over the total number of female animals slaughtered. Economic losses were estimated based on the monetary losses at birth, weaning, maturity, and carcass loss at weaning and maturity. RESULTS The aggregate slaughters were bovine 604 (73.6%), caprine 169 (20.6%) and ovine 48 (5.9%). The overall prevalence of foetal wastage was 21.9%. The aggregate prevalence of foetal wastage by species include 160 (88.9%) cows, 8 (4.4%) heifers, 4 (2.2%) does and 8 (4.4%) ewes. Foetal wastage of cows by trimester included 62 (38.8%), 26 (16.25%) and 72 (45.0%) in first, second and third trimesters, respectively, translating into loss of US$13,055. Foetal wastage was high and the associated economic losses were substantial which undermines sustainability of the national herd. Farmers should be sensitised about the economic losses and long-term impact associated with foetal wastage and dissuaded from this practice. A policy is needed to deter farmers from selling pregnant animals for slaughter. CONCLUSIONS A total of 168 bovine, 8 caprine and 12 ovine foetuses were wasted within 60 days study period. These foetal wastages translated to US$ 13,224 monetary losses at birth, US$ 31,849 monetary loss at weaning and US$ 57,0896 monetary loss at maturity.
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Affiliation(s)
- Stella Nabasirye
- Department of Livestock and Industrial ResourcesCollege of Veterinary Medicine, Animal Resources and Biosecurity, Makerere UniversityKampalaUganda
| | - Sylvia Angubua Baluka
- Department of Livestock and Industrial ResourcesCollege of Veterinary Medicine, Animal Resources and Biosecurity, Makerere UniversityKampalaUganda
| | - Asuman Sengooba
- Department of Livestock and Industrial ResourcesCollege of Veterinary Medicine, Animal Resources and Biosecurity, Makerere UniversityKampalaUganda
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Afolabi-Oboirien KO, Panti AA, Tunau KA, Ukwu AE, Abdulrahman MB, Garba JA. Microalbuminuria and its association with adverse pregnancy outcome in a tertiary health centre in Nigeria. Niger Postgrad Med J 2023; 30:25-30. [PMID: 36814160 DOI: 10.4103/npmj.npmj_293_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
Background Adverse pregnancy outcomes occur more commonly in developing countries and are still prevalent in our sub-region. Microalbuminuria is a marker of endothelial dysfunction and has been proposed as an aetiological factor in the development of some adverse pregnancy outcomes such as pre-eclampsia, intrauterine growth restriction (IUGR) and pre-term labour. Aim The aim is to determine the prevalence of microalbuminuria and its association with adverse pregnancy outcomes. Methods This was a prospective cross-sectional study with follow-up amongst women in early pregnancy presenting at Usmanu Danfodiyo University Teaching Hospital, Sokoto. Three hundred and thirty women with singleton pregnancy at gestational age <20 weeks, blood pressure <140/90 mmHg, normal fasting blood sugar and normal renal function were recruited. Those with a history of hypertension, diabetes mellitus, chronic kidney disease, sickle cell anaemia were excluded, multiple pregnancies, urinary tract infection or positive dipstick proteinuria at first contact were excluded. They were recruited consecutively and a structured interviewer-administered questionnaire was completed. Single-spot urine analysis for albumin was performed. The women were followed up to the time of delivery and the puerperium and any adverse outcome were documented. Results The prevalence of microalbuminuria was 58.4%. The maternal and foetal adverse outcomes such as hypertensive disorders of pregnancy, pre-mature rupture of membrane, IUGR, preterm birth and stillbirth occurred more amongst the women with microalbuminuria. However, there was no statistically significant association between microalbuminuria and having these adverse outcomes (P > 0.05). Conclusion There was a high prevalence of microalbuminuria amongst healthy pregnant women and pregnancy complications occurred more frequently in women with microalbuminuria than in those without. However, this association was not sufficient to predict adverse outcomes in pregnancy.
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Affiliation(s)
| | - Abubakar Abubakar Panti
- Department of Obstetrics and Gynaecology, Usmanu Danfodiyo University/Usmanu Danfodiyo University Teaching Hospital, Sokoto, Nigeria
| | - Karima Abubakar Tunau
- Department of Obstetrics and Gynaecology, Usmanu Danfodiyo University/Usmanu Danfodiyo University Teaching Hospital, Sokoto, Nigeria
| | - Aaron Eze Ukwu
- Department of Obstetrics and Gynaecology, Usmanu Danfodiyo University/Usmanu Danfodiyo University Teaching Hospital, Sokoto, Nigeria
| | - Muhammad Bashir Abdulrahman
- Department of Chemical Pathology, Usmanu Danfodiyo University/Usmanu Danfodiyo University Teaching Hospital, Sokoto, Nigeria
| | - Jamila Abubakar Garba
- Department of Obstetrics and Gynaecology, Usmanu Danfodiyo University Teaching Hospital, Sokoto, Nigeria
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Clemens KJ, Oei JL, Jantzie LL. Editorial: The neurology and neurobiology of neonatal abstinence syndrome. Front Pediatr 2023; 11:1201352. [PMID: 37205219 PMCID: PMC10185881 DOI: 10.3389/fped.2023.1201352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 04/13/2023] [Indexed: 05/21/2023] Open
Affiliation(s)
- Kelly J. Clemens
- School of Psychology, University of New South Wales, Kensington, NSW, Australia
| | - Ju-Lee Oei
- School of Women’s and Children’s Health, University of New South Wales, Kensington, NSW, Australia
- Correspondence: Ju-Lee Oei
| | - Lauren L. Jantzie
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, United States
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Babaoglu K, Dogan Y, Uzun O. Transplacental treatment of foetal supraventricular tachycardia with triple antiarrhythmic combination to avoid intra-foetal intervention. Cardiol Young 2022; 32:1162-5. [PMID: 35022094 DOI: 10.1017/S1047951121004595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Although a high percentage of foetuses with supraventricular tachycardia respond to single or dual antiarrhythmic therapy, on occasion when there is no response to these combination regimens, direct intra-foetal therapy remains the only choice, albeit such an approach carries a potential risk to the foetus.Data with regard to the safety and efficacy of triple antiarrhythmic combination have not been reported before. Here, we present a foetus with intractable tachycardia in whom arrhythmia termination was successfully achieved with triple oral antiarrhythmic therapy.
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Agbaje MA, Alao AI, Owonikoko KM. Ultrasonographic foetal head circumference and cheek-to-cheek diameter at term as predictors of labour outcomes. Niger Postgrad Med J 2022; 29:123-130. [PMID: 35488580 DOI: 10.4103/npmj.npmj_739_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
BACKGROUND The clinical uses of ultrasonography have varied and increased over time, especially the ability of ultrasonographic measured parameters to predict the outcomes of labour. The proper understanding of the association between these ultrasonographic parameters, mode of delivery, adverse maternal and foetal outcomes will further improve patient counselling as well as the planning of intrapartum care. AIM The study explored the ultrasonographic measurement of foetal head circumference (HC) and cheek-to-cheek diameter (CCD) at term as predictors of labour outcomes. METHODOLOGY Eligible pregnant women at term were recruited from the antenatal clinic and had obstetric ultrasound scans done with HC and CCD measured. Maternal and foetal outcomes were measured and included progress in labour, obstetric lacerations, mode of delivery and suspected foetal distress. Data analysis was performed using the Statistical Package for the Social Sciences (SPSS) version 20. RESULTS One hundred and thirty-two patients were recruited into the study. Foetal HC measurements ≥35 cm were closely associated with caesarean delivery odds ratio - 2.40 (95% confidence interval - 1.02-5.66. P = 0.046). Neither CCD nor CCD/HC ratio was predictive of the modes of delivery. The occurrence of perineal lacerations and poor progress of labour were observed more frequently with increasing HC and CCD. CONCLUSIONS HC performed well in predicting caesarean delivery as well as perinatal outcomes among parturients. The ultrasonographic measured HC (≥35 cm) is associated with a higher incidence of both obstetric interventions for poor progress of labour and adverse perinatal outcomes in comparison to CCD. The association between HC and labour dystocia was found to be linear. The CCD did not perform well as a predictor of the mode of delivery.
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Affiliation(s)
| | - Abayomi Ibukun Alao
- Department of Obstetrics and Gynaecology, James Cook University Hospital, Middlesbrough, United Kingdom
| | - Kola Musliudin Owonikoko
- Department of Obstetrics and Gynaecology, LAUTECH Teaching Hospital, Ogbomoso, Oyo State, Nigeria
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Sitoris G, Veltri F, Kleynen P, Ichiche M, Rozenberg S, Poppe KG. Does foetal gender influence maternal thyroid parameters in pregnancy? Eur Thyroid J 2022; 11:e210001. [PMID: 34981747 PMCID: PMC9142799 DOI: 10.1530/etj-21-0001] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 06/30/2021] [Indexed: 11/21/2022] Open
Abstract
Objective It is unknown if foetal gender influences maternal thyroid function during pregnancy. We therefore investigated the prevalence of thyroid disorders and determined first-trimester TSH reference ranges according to gender. Methods A cross-sectional study involving 1663 women with an ongoing pregnancy was conducted. Twin and assisted pregnancies and l-thyroxine or antithyroid treatment before pregnancy were exclusion criteria. Serum TSH, free T4 (FT4) and thyroid peroxidase antibodies (TPOAb) were measured at median (interquartile range; IQR) 13 (11-17) weeks of gestation. Subclinical hypothyroidism (SCH) was present when serum TSH levels were >3.74 mIU/L with normal FT4 levels (10.29-18.02 pmol/L), and thyroid autoimmunity (TAI) was present when TPOAb were ≥60 kIU/L. Results Eight hundred and forty-seven women were pregnant with a female foetus (FF) and 816 with a male foetus (MF). In women without TAI and during the gestational age period between 9 and 13 weeks (with presumed high-serum hCG levels), median (IQR range) serum TSH in the FF group was lower than that in the MF group: 1.13 (0.72-1.74) vs 1.24 (0.71-1.98) mIU/L; P = 0.021. First-trimester gender-specific TSH reference range was 0.03-3.53 mIU/L in the FF group and 0.03-3.89 mIU/L in the MF group. The prevalence of SCH and TAI was comparable between the FF and MF group: 4.4% vs 5.4%; P = 0.345 and 4.9% vs 7.5%; P = 0.079, respectively. Conclusions Women pregnant with an MF have slightly but significantly higher TSH levels and a higher upper limit of the first-trimester TSH reference range, compared with pregnancies with a FF. We hypothesise that this difference may be related to higher hCG levels in women pregnant with a FF, although we were unable to measure hCG in this study. Further studies are required to investigate if this difference has any clinical relevance.
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Affiliation(s)
- Georgiana Sitoris
- Endocrine Unit Centre Hospitalier Universitaire (CHU) Saint-Pierre, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Flora Veltri
- Endocrine Unit Centre Hospitalier Universitaire (CHU) Saint-Pierre, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Pierre Kleynen
- Endocrine Unit Centre Hospitalier Universitaire (CHU) Saint-Pierre, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Malika Ichiche
- Endocrine Unit Centre Hospitalier Universitaire (CHU) Saint-Pierre, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Serge Rozenberg
- Department of Gynecology and Obstetrics, Centre Hospitalier Universitaire (CHU) Saint-Pierre, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Kris G Poppe
- Endocrine Unit Centre Hospitalier Universitaire (CHU) Saint-Pierre, Université Libre de Bruxelles (ULB), Brussels, Belgium
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Battistoni G, Montironi R, Di Giuseppe J, Giannella L, Delli Carpini G, Baldinelli A, Pozzi M, Ciavattini A. Foetal ductus arteriosus constriction unrelated to non-steroidal anti-Inflammatory drugs: a case report and literature review. Ann Med 2021; 53:860-873. [PMID: 34096417 PMCID: PMC8189142 DOI: 10.1080/07853890.2021.1921253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 04/18/2021] [Indexed: 11/25/2022] Open
Abstract
Foetal ductus arteriosus (DA) constriction can be found in complex foetal heart malformations, but rarely as an isolated defect. Although many cases of DA constriction are usually related to Non-steroidal Anti-Inflammatory Drugs (NSAIDs) maternal intake, other causes remain without an established aetiology and are referred to as idiopathic. Recently, a wide range of risks factors or substances (polyphenol-rich foods intake, naphazoline, fluoxetine, caffeine and pesticides) showed a definitive effect upon the pathway of inflammation, causing DA constriction. We report a case of a premature DA constriction in a woman whose possible risk factor was identified in her maternal occupational exposure to solvents and a comprehensive literature review of 176 cases of NSAID-unrelated DA constriction. A 30-year-old Asian woman was referred to our institution at 33 gestational weeks and 0 days because of suspicion of premature DA constriction. The woman had no history of medication intake, including NSAIDs, alcohol, tobacco or polyphenol-rich-food consumption during pregnancy. A detailed foetal echocardiography revealed a normal cardiac anatomy with hypertrophic, hypokinetic and a dilated right ventricle due to right pressure overload, holosystolic tricuspid regurgitation, and, at the level of the DA, high systolic and diastolic velocities, indicating premature ductal restriction. The right outflow showed dilatation of the pulmonary artery with narrow DA. An urgent caesarean section was performed at 33 gestational weeks and 4 days due to worsening of DA PI and signs of right pressure overload, despite the interruption of exposure to solvents. We assume a relationship exists between premature DA constriction and a maternal occupational exposure to solvents. This hypothesis is reinforced by the presence of associated foetal malformations in in two of the patient's children. Further research is needed to confirm the role of exposure to solvents and toxic chemicals in the pathogenesis of DA constriction, also with experimental animal models.KEY MESSAGESMany cases of DA constriction are usually related to Nonsteroidal Anti-Inflammatory Drugs (NSAIDs) maternal intake.A wide range of risks factors or substances (polyphenol-rich foods intake, naphazoline, fluoxetine, caffeine and pesticides) can cause foetal DA constriction.Further investigation are needed to confirm the role of maternal exposure to solvents in the pathogenesis of DA constriction.
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Affiliation(s)
- Giovanna Battistoni
- Woman’s Health Sciences Department, Gynecologic Section, Polytechnic University of Marche, Ancona, Italy
| | - Ramona Montironi
- Woman’s Health Sciences Department, Gynecologic Section, Polytechnic University of Marche, Ancona, Italy
| | - Jacopo Di Giuseppe
- Woman’s Health Sciences Department, Gynecologic Section, Polytechnic University of Marche, Ancona, Italy
| | - Luca Giannella
- Woman’s Health Sciences Department, Gynecologic Section, Polytechnic University of Marche, Ancona, Italy
| | - Giovanni Delli Carpini
- Woman’s Health Sciences Department, Gynecologic Section, Polytechnic University of Marche, Ancona, Italy
| | - Alessandra Baldinelli
- Department of Paediatric and Congenital Cardiac Surgery and Cardiology, Ospedali Riuniti, Ancona, Italy
| | - Marco Pozzi
- Department of Paediatric and Congenital Cardiac Surgery and Cardiology, Ospedali Riuniti, Ancona, Italy
| | - Andrea Ciavattini
- Woman’s Health Sciences Department, Gynecologic Section, Polytechnic University of Marche, Ancona, Italy
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Ratsch A, Bogossian F, Burmeister EA, Steadman K. Central Australian Aboriginal women's placental and neonatal outcomes following maternal smokeless tobacco, cigarette or no tobacco use. Aust N Z J Public Health 2021; 46:186-195. [PMID: 34821425 DOI: 10.1111/1753-6405.13186] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 09/01/2021] [Accepted: 10/01/2021] [Indexed: 12/24/2022] Open
Abstract
OBJECTIVE To describe the placental characteristics and neonatal outcomes of Central Australian Aboriginal women based on maternal self-report of tobacco use. METHODS Placental and neonatal variables were collected from a prospective maternal cohort of 19 smokeless tobacco chewers, 23 smokers and 31 no-tobacco users. RESULTS Chewers had the lowest placental weight (460 g) while the no-tobacco group had the heaviest placental weight (565 g). Chewers and the no-tobacco group had placental areas of similar size (285 cm2 and 288 cm2 , respectively) while the placentas of smokers were at least 13 cm2 smaller (272 cm2 ). There were two stillbirths in the study and more than one-third (36%) of neonates (newborns) were admitted to the Special Care Nursery, with the chewers' neonates having a higher admission rate compared with smokers' neonates (44% vs. 23%). The cohort mean birthweight (3348 g) was not significantly different between the groups. When stratified for elevated maternal glucose, the chewers' neonates had the lowest mean birthweight (2906 g) compared to the neonates of the no-tobacco group (3242 g) and smokers (3398 g). CONCLUSIONS This research is the first to demonstrate that the maternal use of Australian Nicotiana spp. (pituri) as smokeless tobacco may negatively impact placental and neonatal outcomes. Implications for public health: Maternal smokeless tobacco use is a potential source of placental and foetal nicotine exposure. Maternal antenatal screening should be expanded to capture a broader range of tobacco and nicotine products, and appropriate cessation support is required.
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Affiliation(s)
- Angela Ratsch
- Wide Bay Hospital and Health Services, Queensland.,Rural Clinical School, The University of Queensland, Queensland
| | - Fiona Bogossian
- School of Health and Behavioural Sciences, University of the Sunshine Coast, Queensland.,School of Nursing, Midwifery and Social Work, The University of Queensland, Queensland
| | - Elizabeth A Burmeister
- Wide Bay Hospital and Health Services, Queensland.,School of Nursing, Midwifery and Social Work, The University of Queensland, Queensland
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Zhu S, Ye L, Bennett S, Xu H, He D, Xu J. Molecular structure, gene expression and functional role of WFDC1 in angiogenesis and cancer. Cell Biochem Funct 2021; 39:588-595. [PMID: 33615507 DOI: 10.1002/cbf.3624] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 12/29/2020] [Accepted: 01/17/2021] [Indexed: 02/04/2023]
Abstract
Whey acidic proteins (WAP) perform a diverse range of important biological functions, including proteinase activity, calcium transport and bacterial growth. The WAP four-disulphide core domain protein 1 (WFDC1) gene (also called PS20), encodes the 20 kDa prostate stromal protein (ps20), which is a member of the WAP-type four-disulphide core domain family of proteins, and exhibits characteristics of serine protease inhibitors, such as elafin and secretory leukocyte protease inhibitor. Molecular structural analysis reveals that ps20 consists of four-disulphide bonds formed by eight cysteine residues located at the carboxyl terminus of the protein. Wfdc1-null mice were found to display no overt developmental phenotype, suggesting a dispensable role in organ growth and development. However, WFDC1 was able to mediate endothelial cell migration and pericyte stabilization, which are vital for the formation of functional vascular structures. WFDC1 was also found to be downregulated in cancers and exhibited a regulatory effect on cell proliferation. In addition, it was involved in the modulation of memory T cells during human immunodeficiency virus infection. Gaining a solid understanding of the mechanisms by which WFDC1 regulates tissue homeostasis and disease processes, in a tissue specific manner, will be an important move towards the development of WFDC1/ps20 as potential therapeutic targets.
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Affiliation(s)
- Sipin Zhu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,Division of Regenerative Biology, School of Biomedical Sciences, University of Western Australia, Perth, Western Australia, Australia
| | - Lin Ye
- Department of Orthopaedic Surgery, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui Municipal Central Hospital, Lishui, China
| | - Samuel Bennett
- Division of Regenerative Biology, School of Biomedical Sciences, University of Western Australia, Perth, Western Australia, Australia
| | - Huazi Xu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Dengwei He
- Department of Orthopaedic Surgery, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui Municipal Central Hospital, Lishui, China
| | - Jiake Xu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,Division of Regenerative Biology, School of Biomedical Sciences, University of Western Australia, Perth, Western Australia, Australia
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Mawad W, Dutil N, Thakur V. Unique foetal diagnosis of aorto-pulmonary collaterals in right atrial isomerism. Cardiol Young 2021; 31:303-5. [PMID: 33239120 DOI: 10.1017/S1047951120003649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Right atrial isomerism is associated with complex cardiac malformations, particularly single-ventricle lesions; right atrial isomerism is rarely associated with aorto-pulmonary collateral arteries. We report a foetal diagnosis of right atrial isomerism, with an unbalanced atrioventricular septal defect, pulmonary stenosis, total anomalous venous drainage, and significant aorto-pulmonary collaterals diagnosed at 22 weeks' gestation.
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12
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Mansour Y, Kulesza R. A tale of two arteries: dual posterior cerebral arteries with vascular bridges. A possible protective pattern? Folia Morphol (Warsz) 2020; 80:455-459. [PMID: 32644187 DOI: 10.5603/fm.a2020.0070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 07/01/2020] [Accepted: 07/01/2020] [Indexed: 11/25/2022]
Abstract
Stroke is a common morbidity and a frequent cause of disability and even death. The impact of cerebrovascular events is dictated by the brain region involved and can be complicated by anatomical variations. One of the most common variations impacting the cerebral vasculature is the presence of a foetal posterior cerebral artery. This vessel arises from the internal carotid artery instead of the basilar artery and is often associated with more extensive injury in cerebrovascular events. Herein, we report the case of a 60-year-old male who had numerous arterial abnormalities, including a kink and a coil of the left internal carotid, two posterior communicating arteries on the right and two posterior cerebral arteries (PCA) on the left, one arising from the internal carotid (foetal PCA) and one from the basilar. The foetal PCA supplied the thalamus, splenium of the corpus callosum and primary visual cortex. The basilar PCA supplied the midbrain and parts of the occipital lobe. These PCA were connected to each other by a vascular bridge and the foetal PCA was connected to the middle cerebral artery by an additional vascular bridge. This vascular pattern would appear to provide collateral support around blockages in the internal carotid and main stem middle and PCA.
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Affiliation(s)
- Y Mansour
- Department of Anatomy, Lake Erie College of Osteopathic Medicine, Erie, PA, United States. .,Department of Otolaryngology and Facial Plastic Surgery, Henry Ford Macomb, Clinton Twp, MI, United States.
| | - R Kulesza
- Department of Anatomy, Lake Erie College of Osteopathic Medicine, Erie, PA, United States
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Lorant J, Poinas A, Nerriere O, Vrignaud F, Frenard C, Winer N, Khammari A, Dreno B. Foetal skin cells in wound healing: a promising tool for clinical application. Eur J Dermatol 2019; 29:585-95. [PMID: 31903948 DOI: 10.1684/ejd.2019.3675] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The skin is the first protective barrier of our body. Wound healing is therefore an essential mechanism. However, this phenomenon can be impaired when wounds are too large or chronic, for example, in diabetes. Interestingly, adult skin heals with scars, whereas foetuses present scarless regeneration. The objective of this review is to highlight the difference in healing pathways between foetal and adult skin and to present the recent therapeutic strategies envisaged using foetal properties in the clinic. The main features that distinguish foetal wound healing from adult wound healing are less tissue inflammation, faster reepithelialisation, and less contraction of the neodermis, allowing foetal tissues to regenerate. Recently, new therapies in regenerative medicine have been introduced using these foetal properties. For the first time, our team has developed CICAFAST, an innovative dressing composed of foetal keratinocytes and fibroblasts, which has been tested on a skin graft donor site in a clinical Phase 1/2 trial.
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Abstract
Corticosteroid administration before anticipated preterm birth is a well known antenatal therapy available to improve newborn outcomes. Doppler studies of maternal and foetal vessels provide a way to understand how corticosteroid affects and improves foetal respiratory outcome. This study was registered on 8th of October, 2017 by Menoufia Faculty of Medicine Board with registration number 222-2-10-2017. It included 80 pregnant women divided into two groups. Each group consisted of 40 participants. Group A: participants were between 28 weeks and 34 weeks of gestation and were at risk of preterm labour. Group B: participants were those who had undergone an elective caesarean section (CS) before completing the 39th week of gestation. Each woman had received four doses of Dexamethasone 6 mg intramuscularly, 12 h apart. Doppler studies were performed before the Dexamethasone adminstration and 24 h after the Dexamethasone course. Among both groups, only pregnant women before 34 weeks of gestation showed a significant decrease in middle cerebral artery pulsatility index. However, the other Doppler parameters showed no significant effect. In conclusion, Dexamethasone administration affected only the middle cerebral artery pulsatility index before 34 weeks of gestation.IMPACT STATEMENTWhat is already known on this subject? Preterm births account for 75% of neonatal morbidity and pulmonary dysfunction plays an important role on such morbidities. Also, neonates born after an elective CS have significantly higher rates of respiratory morbidity and neonatal intensive care unit admission. Corticosteroids are wildly used to improve neonatal outcome in women who have expected preterm labour and before an elective CS.What do the results of this study add? Dexamethasone affected blood distribution of foetal brain only before 34 weeks of gestation that had been proved by changes of foetal middle cerebral artery pulsatility index without affecting other Doppler parameters of both groups. With the improvement of foetal respiratory outcome in both groups.What are the implications of these finding for clinical practice and/or further research? Maternal Dexamethasone injection is recommended for mothers at risk of preterm labour, especially if delivery is expected within six days and mothers who will undergo elective CS before completion of 39 weeks of gestation, in terms of improving neonatal respiratory functions and decreasing the possibility of admission to neonatal intensive care unit for transient tachypnoea of the newborn.
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Affiliation(s)
- Ahmed M Nofal
- Obstetrics and Gynacology Department, Faculty of Medicine, Menoufia University, Shebin El-Kom, Egypt
| | - Tarek M Sayyed
- Obstetrics and Gynacology Department, Faculty of Medicine, Menoufia University, Shebin El-Kom, Egypt
| | - Hesham S Mahmoud
- Obstetrics and Gynacology Department, Faculty of Medicine, Menoufia University, Shebin El-Kom, Egypt
| | - Tamer Y Atia
- Obstetrics and Gynacology Department, Menouf General Hospital, Shebin El-Kom, Egypt
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15
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Abstract
Digit ratio (2d/4d) in humans is commonly used as a proxy for the exposure to oestrogens and androgens in prenatal life. Masculinisation/feminisation in adults may be also related to digit ratio and therefore to the oestrogen/androgen ratio in prenatal life. It has been shown, for instance, that Waist-to-Hip ratio (WHR) and the amount and distribution of body fat are related to digit ratio in women. A species-specific, sexually dimorphic morphological trait in humans is also a pair of permanent breasts that develop during puberty, under the influence of oestrogens. Here we test if prenatal exposure to oestrogens (in relation to androgens), measured by digit ratio, may also be related to breast size in young, nulliparous women. 133 Turkish students (mean age 22.2) were measured. Breast size was calculated as the difference between breast and under-breast circumferences. We found that when controlling for body mass index (BMI), both right and left digit ratios correlate positively with breast size. This relationship is stronger for the digit ratio of the right hand, which confirms that this side is a better measure of sex differences. Thus, higher exposure to oestrogens in prenatal life is related with stronger expression of a sexually dimorphic trait, such as breast size, in adult women.
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Affiliation(s)
- Berna Ertuğrul
- Department of Anthropology, Sivas Cumhuriyet University, Sivas, Turkey
| | - Barış Özener
- Department of Anthropology, İstanbul University, İstanbul, Turkey
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Blay RM, Adjenti SK, Adutwum-Ofosu KK, Hottor BA, Ahenkorah J, Arko-Boham B, Addai FK. Natural cocoa inhibits maternal hypercholesterolaemia-induced atherogenesis in rabbit pups. Cardiovasc J Afr 2019; 30:208-215. [PMID: 31140539 DOI: 10.5830/cvja-2019-019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Accepted: 04/16/2019] [Indexed: 11/06/2022] Open
Abstract
Atherosclerosis begins during foetal development and is enhanced by maternal hypercholesterolaemia during pregnancy. This study assessed the effect of natural cocoa on atherosclerosis in offspring conceived in maternal hypercholesterolaemia. Female rabbits were fed a cholesterol-enriched diet for two weeks and hypercholesterolaemia was confirmed, after which they were crossed with normocholesterolaemic males. One group of hypercholesterolaemic mothers (HCC) received natural cocoa powder (NCP) in their drinking water, whereas the other group (HC) received only water. Histological analysis of three segments of the aorta (arch, thoracic and abdominal) from offspring of both groups was compared with a control group (NC). Intima-media thickness of the aortic arch in offspring born to hypercholesterolaemic rabbits (HC: 146 µm) was higher compared to HCC (99 µm) and control rabbits (58.5 µm). All the sections from the aortic arch of the HC group had atherosclerotic lesions while none of the sections of the aortic arch from the NC and HCC groups had lesions present. Inferentially, regular and voluntary consumption of NCP during pregnancy may inhibit aortic atherogenesis in offspring of hypercholesterolaemic mothers.
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Affiliation(s)
- Richard Michael Blay
- Department of Anatomy, School of Biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, Korle-Bu campus, Accra, Ghana.
| | - Saviour Kweku Adjenti
- Department of Anatomy, School of Biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, Korle-Bu campus, Accra, Ghana
| | - Kevin Kofi Adutwum-Ofosu
- Department of Anatomy, School of Biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, Korle-Bu campus, Accra, Ghana
| | - Bismarck Afedo Hottor
- Department of Anatomy, School of Biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, Korle-Bu campus, Accra, Ghana
| | - John Ahenkorah
- Department of Anatomy, School of Biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, Korle-Bu campus, Accra, Ghana
| | - Benjamin Arko-Boham
- Department of Anatomy, School of Biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, Korle-Bu campus, Accra, Ghana
| | - Frederick Kwaku Addai
- Department of Anatomy, School of Biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, Korle-Bu campus, Accra, Ghana
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17
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Agena AG, Modiba LM. Maternal and foetal medical conditions during pregnancy as determinants of intrapartum stillbirth in public health facilities of Addis Ababa: a case-control study. Pan Afr Med J 2019; 33:21. [PMID: 31312337 PMCID: PMC6615772 DOI: 10.11604/pamj.2019.33.21.17728] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 03/09/2019] [Indexed: 01/08/2023] Open
Abstract
Introduction globally, intrapartum stillbirth accounts for 1 million deaths of babies annually, representing approximately one-third of global stillbirth toll. Intrapartum stillbirth occurs due to causes ranging from maternal medical and obstetric conditions; access to quality obstetric care services during pregnancy; and types, timing and quality of intrapartum care. Different medical conditions including hypertensive & metabolic disorders, infections and nutritional deficiencies during pregnancy are among risk factors of stillbirth. Ethiopia remains one of the 10 high-burden stillbirth countries with estimated rate of more than 25 per 1000 births. Methods a case-control study using primary data from chart review of medical records of women who experienced intrapartum stillbirth in 23 public health facilities of Addis Ababa during the period July 1, 2010 - June 30, 2015 was conducted. Data was collected from charts of all cases of intrapartum stillbirth meeting the inclusion criteria and randomly selected charts of controls in two to one (2:1) control to case ratio. Results chronic medical conditions including diabetes, cardiac and renal diseases were less prevalent (1%) among the study population whereas only 6% of women experienced hypertensive disorder during the pregnancy in review. Moreover, 6.5% of the study population had HIV infection where being HIV negative was protective against intrapartum stillbirth (aOR 0.37, 95% CI 0.18-0.78). Women with non-cephalic foetal presentation during last ANC visit were three times more at risk of experiencing intrapartum stillbirth whereas singleton pregnancy had strong protective association against intrapartum stillbirth (p<0.05). Conclusion untreated chronic medical conditions, infection, poor monitoring of foetal conditions and multiple pregnancy are among important risk factors for intrapartum stillbirth.
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Affiliation(s)
| | - Lebitsi Maud Modiba
- Department of Health Studies, University of South Africa, TvW 7-160 College of Human Sciences, Unisa, South Africa
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18
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He H, Gan J, Qi H. Assessing extensive cardiac echography examination for detecting foetal congenital heart defects during early and late gestation: a systematic review and meta-analysis. Acta Cardiol 2017; 71:699-708. [PMID: 27920458 DOI: 10.2143/ac.71.6.3178189] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Bellingham M, Fowler PA, MacDonald ES, Mandon‐Pepin B, Cotinot C, Rhind S, Sharpe RM, Evans NP. Timing of Maternal Exposure and Foetal Sex Determine the Effects of Low-level Chemical Mixture Exposure on the Foetal Neuroendocrine System in Sheep. J Neuroendocrinol 2016; 28:10.1111/jne.12444. [PMID: 27870155 PMCID: PMC5621486 DOI: 10.1111/jne.12444] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Revised: 10/21/2016] [Accepted: 11/01/2016] [Indexed: 01/09/2023]
Abstract
We have shown that continuous maternal exposure to the complex mixture of environmental chemicals (ECs) found in human biosolids (sewage sludge), disrupts mRNA expression of genes crucial for development and long-term regulation of hypothalamic-pituitary gonadal (HPG) function in sheep. The present study investigated whether exposure to ECs only during preconceptional period or only during pregnancy perturbed key regulatory genes within the hypothalamus and pituitary gland and whether these effects were different from chronic (life-long) exposure to biosolid ECs. The findings demonstrate that the timing and duration of maternal EC exposure influences the subsequent effects on the foetal neuroendocrine system in a sex-specific manner. Maternal exposure prior to conception, or during pregnancy only, altered the expression of key foetal neuroendocrine regulatory systems such as gonadotrophin-releasing hormone and kisspeptin to a greater extent than when maternal exposure was 'life-long'. Furthermore, hypothalamic gene expression was affected to a greater extent in males than in females and, following EC exposure, male foetuses expressed more 'female-like' mRNA levels for some key neuroendocrine genes. This is the first study to show that 'real-life' maternal exposure to low levels of a complex cocktail of chemicals prior to conception can subsequently affect the developing foetal neuroendocrine system. These findings demonstrate that the developing neuroendocrine system is sensitive to EC mixtures in a sex-dimorphic manner likely to predispose to reproductive dysfunction in later life.
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Affiliation(s)
- M. Bellingham
- Institute of BiodiversityAnimal Health and Comparative MedicineUniversity of GlasgowGlasgowUK
| | - P. A. Fowler
- Division of Applied MedicineCentre for Reproductive Endocrinology and MedicineInstitute of Medical SciencesUniversity of AberdeenAberdeenUK
| | - E. S. MacDonald
- Institute of BiodiversityAnimal Health and Comparative MedicineUniversity of GlasgowGlasgowUK
| | | | - C. Cotinot
- UMR BDRUniversite Paris SaclayParisFrance
| | - S. Rhind
- James Hutton InstituteAberdeenUK
| | - R. M. Sharpe
- MRC Centre for Reproductive HealthUniversity of EdinburghEdinburghUK
| | - N. P. Evans
- Institute of BiodiversityAnimal Health and Comparative MedicineUniversity of GlasgowGlasgowUK
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Wilkinson AL, Pedersen SH, Urassa M, Michael D, Andreasen A, Todd J, Kinung'hi SM, Changalucha J, McDermid JM. Maternal systemic or cord blood inflammation is associated with birth anthropometry in a Tanzanian prospective cohort. Trop Med Int Health 2016; 22:52-62. [PMID: 27761979 DOI: 10.1111/tmi.12799] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVES HIV infection is associated with chronic systemic inflammation, with or without antiretroviral therapy. Consequences for foetal growth are not understood, particularly in settings where multiple maternal infections and malnutrition are common. The study was designed to examine maternal systemic circulating and umbilical cord blood cytokine concentrations in relation to birth anthropometry in a Tanzanian prospective cohort. METHODS A 9-plex panel of maternal plasma cytokines in HIV-positive (n = 44) and HIV-negative (n = 70) mothers and the same cytokines in umbilical cord blood collected at delivery was assayed. Linear regression modelled associations between maternal or cord blood cytokines and birth anthropometry. RESULTS Health indicators (haemoglobin, mid-upper-arm circumference, body mass index) in HIV-positive mothers without considerable immunosuppression did not differ from HIV-negative women. Despite this, HIV-exposed infants had lower birthweight and length. Subgroup analyses indicated that HIV management using HAART was associated with lower plasma TNF-α, as were longer durations of any antiretroviral therapy (≥2 months). Greater maternal plasma TNF-α was associated with earlier delivery (-1.7 weeks, P = 0.039) and lower birthweights (-287 g; P = 0.020), while greater umbilical cord TNF-α (-1.43 cm; P = 0.036) and IL-12p70 (-2.4 cm; P = 0.008) were associated with shorter birth length. Birthweight was inversely associated with cord IL-12p70 (-723 g; P = 0.001) and IFN-γ (-482 g, P = 0.007). Maternal cytokines during pregnancy did not correlate with umbilical cord cytokines at delivery. CONCLUSIONS Systemic inflammation identified in maternal plasma or umbilical cord blood was associated with poorer birth anthropometrics in HIV-exposed and HIV-unexposed infants. Controlling maternal and/or foetal systemic inflammation may improve birth anthropometry.
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Affiliation(s)
- A L Wilkinson
- Division of Nutritional Sciences, Cornell University, Ithaca, NY, USA
| | - S H Pedersen
- Division of Nutritional Sciences, Cornell University, Ithaca, NY, USA
| | - M Urassa
- National Institute for Medical Research, Mwanza Research Centre, Mwanza, Tanzania
| | - D Michael
- National Institute for Medical Research, Mwanza Research Centre, Mwanza, Tanzania
| | - A Andreasen
- Department of Clinical Research, London School of Hygiene and Tropical Medicine, London, UK
| | - J Todd
- Department of Population Health, London School of Hygiene and Tropical Medicine, London, UK
| | - S M Kinung'hi
- National Institute for Medical Research, Mwanza Research Centre, Mwanza, Tanzania
| | - J Changalucha
- National Institute for Medical Research, Mwanza Research Centre, Mwanza, Tanzania
| | - J M McDermid
- Division of Nutritional Sciences, Cornell University, Ithaca, NY, USA.,Division of Infectious Diseases & International Health, University of Virginia, Charlottesville, VA, USA
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Ayres-de-Campos D, Rei M, Nunes I, Sousa P, Bernardes J. SisPorto 4.0 - computer analysis following the 2015 FIGO Guidelines for intrapartum fetal monitoring. J Matern Fetal Neonatal Med 2016; 30:62-67. [PMID: 26940372 DOI: 10.3109/14767058.2016.1161750] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
SisPorto 4.0 is the most recent version of a program for the computer analysis of cardiotocographic (CTG) signals and ST events, which has been adapted to the 2015 International Federation of Gynaecology and Obstetrics (FIGO) guidelines for intrapartum foetal monitoring. This paper provides a detailed description of the analysis performed by the system, including the signal-processing algorithms involved in identification of basic CTG features and the resulting real-time alerts.
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Affiliation(s)
- Diogo Ayres-de-Campos
- a Department of Obstetrics and Gynecology , Medical School, University of Porto , Porto , Portugal.,b S. Joao Hospital , Porto , Portugal.,c Institute of Biomedical Engineering (INEB), Instituto de Investigação e Inovação em Saúde (i3s) , Porto , Portugal , and.,d Centre for Research in Health Information Systems and Technologies (CINTESIS) , Porto , Portugal
| | - Mariana Rei
- a Department of Obstetrics and Gynecology , Medical School, University of Porto , Porto , Portugal.,b S. Joao Hospital , Porto , Portugal.,c Institute of Biomedical Engineering (INEB), Instituto de Investigação e Inovação em Saúde (i3s) , Porto , Portugal , and
| | - Inês Nunes
- a Department of Obstetrics and Gynecology , Medical School, University of Porto , Porto , Portugal.,b S. Joao Hospital , Porto , Portugal.,c Institute of Biomedical Engineering (INEB), Instituto de Investigação e Inovação em Saúde (i3s) , Porto , Portugal , and.,d Centre for Research in Health Information Systems and Technologies (CINTESIS) , Porto , Portugal
| | - Paulo Sousa
- c Institute of Biomedical Engineering (INEB), Instituto de Investigação e Inovação em Saúde (i3s) , Porto , Portugal , and
| | - João Bernardes
- a Department of Obstetrics and Gynecology , Medical School, University of Porto , Porto , Portugal.,b S. Joao Hospital , Porto , Portugal.,c Institute of Biomedical Engineering (INEB), Instituto de Investigação e Inovação em Saúde (i3s) , Porto , Portugal , and.,d Centre for Research in Health Information Systems and Technologies (CINTESIS) , Porto , Portugal
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Mbuli L, Mapiye D, Okpechi I. Lupus nephritis is associated with poor pregnancy outcomes in pregnant SLE patients in Cape Town: a retrospective analysis. Pan Afr Med J 2015; 22:365. [PMID: 27022425 PMCID: PMC4789183 DOI: 10.11604/pamj.2015.22.365.7897] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2015] [Accepted: 12/01/2015] [Indexed: 11/25/2022] Open
Abstract
Introduction Systemic lupus erythematosus (SLE) is a multi-system auto-immune disease common in females of child-bearing age. The effect of pregnancy on SLE and vice versa have not been well characterised in Africans. The aim of this study is to describe the pregnancy outcomes of patients with SLE presenting to the maternity department of Groote Schuur Hospital, Cape Town. Methods This study was designed as a retrospective review of records of pregnant women known with SLE and followed-up at the maternity section of Groote Schuur Hospital. The duration of survey was from the 1st January 2003 to 31st December 2013. Results There were 61 pregnancies reviewed in 49 patients; 80.3% of the pregnancies were in patients of mixed ancestry and the rest (19.7%) in black African patients. The mean age at presentation of the current pregnancy was 27.2±5.0 years. Mean gestational age at presentation and delivery was 13.0 ± 6.0 weeks and 28.9 ± 9.8 weeks respectively and 47.5% of the pregnancies were in patients with lupus nephritis (LN). Thirty nine (63.9%) pregnancies reached the third trimester and 11.5% of all pregnancies ended in the first trimester. There was a lower number of live births to mothers of African ancestry than to those of mixed ancestry (p=0.001). In 55.7% of the pregnancies, no flare was reported while a renal flare was reported in 23%. Pregnancies in patients with LN had higher frequencies of flares (58.6% vs 31.3%; p=0.032), pre-eclampsia (34.5% vs 12.5%; p=0.041), longer stay in hospital (12.0 ± 9.1 days vs 6.1 ± 5.1 days; p=0.004) and low birth weight babies (1.94 ± 1.02 kg vs 2.55±0.95 kg; p=0.046) than in patients without LN. Only 36 (59%) of the neonates were discharged home alive and of these 2 (5.6%) were to mothers of black African ancestry (p=0.001). Conclusion Increased lupus activity in pregnant SLE patients may account for the increased deaths of neonates born to SLE mothers. Patients of black African descent and those with LN tend to have a poorer outcome. A multi-disciplinary approach to the management of SLE patients (of child-bearing age or pregnant) needs to be further assessed for better outcomes.
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Affiliation(s)
- Lindisa Mbuli
- Department of Medicine, Groote Schuur Hospital and University of Cape Town, Cape Town, South Africa
| | - Darlington Mapiye
- South Africa National Bioinformatics Institute (SANBI), University of the Western Cape, Cape Town, South Africa
| | - Ikechi Okpechi
- Department of Medicine, Groote Schuur Hospital and University of Cape Town, Cape Town, South Africa; Division of Nephrology and Hypertension, University of Cape Town, Cape Town, South Africa
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Abstract
Five systems for computer analysis of foetal monitoring signals are currently available, incorporating the evaluation of cardiotocographic (CTG) or combined CTG with electrocardiographic ST data. All systems have been integrated with central monitoring stations, allowing the simultaneous monitoring of several tracings on the same computer screen in multiple hospital locations. Computer analysis elicits real-time visual and sound alerts for health care professionals when abnormal patterns are detected, with the aim of prompting a re-evaluation and subsequent clinical action, if considered necessary. Comparison between the CTG analyses provided by the computer and clinical experts has been carried out in all systems, and in three of them, the accuracy of computer alerts in predicting newborn outcomes was evaluated. Comparisons between these studies are hampered by the differences in selection criteria and outcomes. Two of these systems have just completed multicentre randomised clinical trials comparing them with conventional CTG monitoring, and their results are awaited shortly. For the time being, there is limited evidence regarding the impact of computer analysis of foetal monitoring signals on perinatal indicators and on health care professionals' behaviour.
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Affiliation(s)
- Inês Nunes
- Department of Obstetrics and Gynecology, Medical School, University of Porto, S. Joao Hospital, Porto, Portugal; Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal; INEB - Institute of Biomedical Engineering, University of Porto, Porto, Portugal.
| | - Diogo Ayres-de-Campos
- Department of Obstetrics and Gynecology, Medical School, University of Porto, S. Joao Hospital, Porto, Portugal; Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal; INEB - Institute of Biomedical Engineering, University of Porto, Porto, Portugal
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Abstract
The vomeronasal organ (VNO) is the receptor structure of the vomeronasal system (VNS) in vertebrates. It is found bilaterally in the submucosa of the inferior part of the nasal septum. There are ongoing controversies regarding the functionality of this organ in humans. In this study we propose the immunohistochemical evaluation of changes in components of the human vomeronasal epithelium during foetal development. We used 45 foetuses of different age, which were included in three age groups. After VNO identification immunohistochemical reactions were performed using primary antibodies against the following: neuron specific enolase, calretinin, neurofilament, chromogranin, synaptophysin, cytokeratin 7, pan-cytokeratin and S100 protein. Digital slides were obtained and following colorimetric segmentation, surface area measurements were performed. The VNO was found in less than half of the studied specimens (42.2%). Neuron specific enolase and calretinin immunoexpression showed a decreasing trend with foetal age, while the other neural/neuroendocrine markers were negative in all specimens. Cytokeratin 7 expression increased with age, while Pan-Ctk had no significant variations. S100 protein immunoexpression also decreased around the VNO. The results of the present work uphold the theory of regression of the neuroepithelium that is present during initial stages of foetal development.
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Affiliation(s)
- Lóránd Dénes
- 1Department of Anatomy and Embryology, University of Medicine and Pharmacy, Tîrgu Mureş, Romania
| | - Zsuzsanna Pap
- 1Department of Anatomy and Embryology, University of Medicine and Pharmacy, Tîrgu Mureş, Romania
| | - Annamária Szántó
- 1Department of Anatomy and Embryology, University of Medicine and Pharmacy, Tîrgu Mureş, Romania
| | - István Gergely
- 2Department of Orthopaedic Surgery and Traumatology I, University of Medicine and Pharmacy, Tîrgu Mureş, Romania
| | - Tudor Sorin Pop
- 2Department of Orthopaedic Surgery and Traumatology I, University of Medicine and Pharmacy, Tîrgu Mureş, Romania
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Barber JL, Sebire NJ, Chitty LS, Taylor AM, Arthurs OJ. Lung aeration on post-mortem magnetic resonance imaging is a useful marker of live birth versus stillbirth. Int J Legal Med 2015; 129:531-6. [PMID: 25476541 PMCID: PMC4412725 DOI: 10.1007/s00414-014-1125-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Accepted: 08/29/2014] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Aim of this study was to investigate whether lung assessment on post-mortem magnetic resonance imaging (PMMR) can reliably differentiate between live birth and stillbirth. MATERIALS AND METHODS We retrospectively assessed PMMR imaging features of a group of late foetal terminations following fetocide and stillbirths (without witnessed breathing) and early infant deaths (breathed spontaneously before death). PMMR images were reviewed for evidence of lung aeration and other features, blinded to the clinical and autopsy data. RESULTS Nineteen infant deaths (mean age 3.0 ± 6.5 post-natal weeks) and 23 foetal terminations or stillbirths (mean age 32.6 ± 10.2-week gestation) were compared. Subjective appearances of lung aeration on PMMR were the best indicator of live birth, with a sensitivity of 89.5% (95% confidence interval 68.6, 97.1%) and specificity of 95.6% (79.0, 99.2%) and positive and negative predictive values of 94.4% and 91.7%, respectively. CONCLUSIONS Lung aeration on PMMR appears to have high overall accuracy for confirmation of live birth versus intrauterine foetal death but now requires validating in a larger cohort of perinatal deaths.
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Affiliation(s)
- Joy L. Barber
- Department of Radiology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK WC1N 3JH
| | - Neil J. Sebire
- Department of Histopathology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
- UCL Institute of Child Health, London, UK
| | - Lyn S. Chitty
- Genetics and Genomic Medicine, UCL Institute of Child Health, London, UK
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
- UCLH NHS Foundation Trust, London, UK
| | - Andrew M. Taylor
- Cardiorespiratory Division, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
- Centre for Cardiovascular Imaging, UCL Institute of Cardiovascular Science, London, UK
| | - Owen J. Arthurs
- Department of Radiology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK WC1N 3JH
- UCL Institute of Child Health, London, UK
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Abstract
BACKGROUND Attempts to explain the increased risk for metabolic disorders observed in South Asians have focused on the "South Asian" phenotype at birth and subsequent post-natal growth, with little research on pre-natal growth. AIM To identify whether divergent growth patterns exist for foetal weight, head (HC) and abdominal circumferences (AC) in a sample of Pakistani and White British foetuses. SUBJECTS AND METHODS Models were based on 5553 (weight), 5154 (HC) and 5099 (AC) foetuses from the Born in Bradford birth cohort. Fractional polynomials and mixed effects models were employed to determine growth patterns from ~15 weeks of gestation-birth. RESULTS Pakistani foetuses were significantly smaller and lighter as early as 20 weeks. However, there was no ethnic difference in the growth patterns of weight and HC. For AC, Pakistani foetuses displayed a trend for reduced growth in the final trimester. CONCLUSION As the pattern of weight and HC growth was not significantly different during the period under investigation, the mechanism culminating in the reduced Pakistani size at birth may act earlier in gestation. Reduced AC growth in Pakistanis may represent reduced growth of the visceral organs, with consequences for post-natal liver metabolism and renal function.
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Affiliation(s)
- Tom Norris
- Centre for Global Health and Human Development, School of Sport, Exercise and Health Sciences, Loughborough University , Loughborough , UK and
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Shirvani MA, Ganji Z. The influence of cold pack on labour pain relief and birth outcomes: a randomised controlled trial. J Clin Nurs 2013; 23:2473-9. [PMID: 24206010 DOI: 10.1111/jocn.12413] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/29/2013] [Indexed: 12/16/2022]
Abstract
AIMS AND OBJECTIVES (1) To evaluate the influence of local cold on severity of labour pain and (2) to identify the effect of local cold on maternal and neonatal outcomes. BACKGROUND Fear of labour pain results in an increase in pain and duration of labour, maternal discontent and demand for caesarean section. Regarding maternal and foetal complications of analgesic medications, the attention to application of nonpharmacological methods including cold therapy is increased. DESIGN Randomised controlled trial. METHODS Sixty-four pregnant women, at initiation of active phase of labour, were allocated randomly to cold therapy and control groups (n = 64). Null parity, term pregnancy, presence of single foetus, cephalic presentation and completing informed consent were considered as inclusion criteria. Administration of analgesic and anaesthesia, foetal distress, skin lesions in regions of cold therapy and high-risk pregnancy provided exclusion criteria. Cold pack was applied over abdomen and back, for 10 minutes every 30 minutes during first phase of labour. Additionally, cold pack was placed over perineum, for 5 minutes every 15 minutes during second phase. Pain severity was assessed based on the visual analogue scale. RESULTS The two groups were not significantly different considering demographic data, gestational age, foetal weight, rupture of membranes and primary severity of pain. Degree of pain was lower in cold therapy group during all parts of active phase and second stage. Duration of all phases was shorter in cold therapy group in all phases. Foetal heart rate, perineal laceration, type of birth, application of oxytocin and APGAR score were not significantly different between two groups. CONCLUSION Labour pain is probably reduced based on gate theory using cold. Pain control by cold maybe improves labour progression without affecting mother and foetus adversely. RELEVANCE TO CLINICAL PRACTICE Local cold therapy could be included in labour pain management.
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Affiliation(s)
- Marjan Ahmad Shirvani
- Department of Midwifery, Mazandaran University of Medical Sciences, Sari School of Nursing & Midwifery, Amir Mazandarani Boulevard, Vesal St., Sari, Iran
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Lam P, Samson A, Magotti R, Benzie R. The effect of preliminary training on quantitative evaluation of sonographer performance in the fetal morphology ultrasound examination. Australas J Ultrasound Med 2013; 16:142-146. [PMID: 28191188 PMCID: PMC5030000 DOI: 10.1002/j.2205-0140.2013.tb00102.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Introduction: The aim of this study is to provide a quantitative scoring system to assess sonographer performance by reviewing images from the fetal morphology examination. Methods: Ten ultrasound images from patients at 18–22 weeks gestation were assessed and scored for quality according to predefined criteria. One hundred normal cases were randomly selected and 10 images from each case were analysed by four experienced reviewers. The preliminary training incorporated the first 25 cases and involved a training period for reviewers; the remaining 75 cases were allocated to post training. The scores acquired by each reviewer were statistically analysed using Pearson's and intra‐class correlations to determine the reproducibility of the results. Results: The preliminary training results were calculated separately and compared to the post training study. The preliminary intra‐class correlation coefficient was 0.12. In the post training study the intra‐class correlation coefficient was doubled at 0.24. The greatest correlation was observed between reviewers 1 and 4 with a coefficient of 0.71. Reviewers 3 and 4 demonstrated the lowest correlation coefficient of 0.30. Discussion: A significant increase in the intra‐class correlation coefficient indicated that training reviewers achieves more reproducible results. Suggested improvements to the study include recording fetal position, maternal BMI and assessing individual reviewer variability. An instruction manual defining each criterion might also yield better results. Conclusion: The quantitative method used in this study assessed ultrasound images by placing a numerical value on image quality. Analysis of the preliminary training period demonstrates improved reproducibility of the results. Further investigation into the criteria is necessary to refine the quantitative method.
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Affiliation(s)
- Penny Lam
- Christopher Kohlenberg Department of Perinatal Ultrasound Nepean Hospital University of Sydney Penrith New South Wales Australia
| | - Armie Samson
- Christopher Kohlenberg Department of Perinatal Ultrasound Nepean Hospital University of Sydney Penrith New South Wales Australia
| | - Robert Magotti
- Christopher Kohlenberg Department of PerinatalUltrasound Nepean HospitalUniversity of SydneyPenrithNew South WalesAustralia; Obstetrics and Gynaecology DepartmentUniversity of SydneySydneyNew South WalesAustralia
| | - Ronald Benzie
- Christopher Kohlenberg Department of PerinatalUltrasound Nepean HospitalUniversity of SydneyPenrithNew South WalesAustralia; Obstetrics and Gynaecology DepartmentUniversity of SydneySydneyNew South WalesAustralia
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Gowri AM, Kavitha G, Rajasundari M, Fathima SM, Kumar TS, Raj GD. Foetal stem cell derivation & characterization for osteogenic lineage. Indian J Med Res 2013; 137:308-15. [PMID: 23563374 PMCID: PMC3657854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
BACKGROUND & OBJECTIVES Mesencymal stem cells (MSCs) derived from foetal tissues present a multipotent progenitor cell source for application in tissue engineering and regenerative medicine. The present study was carried out to derive foetal mesenchymal stem cells from ovine source and analyze their differentiation to osteogenic linage to serve as an animal model to predict human applications. METHODS Isolation and culture of sheep foetal bone marrow cells were done and uniform clonally derived MSC population was collected. The cells were characterized using cytochemical, immunophenotyping, biochemical and molecular analyses. The cells with defined characteristics were differentiated into osteogenic lineages and analysis for differentiated cell types was done. The cells were analyzed for cell surface marker expression and the gene expression in undifferentiated and differentiated osteoblast was checked by reverse transcriptase PCR (RT PCR) analysis and confirmed by sequencing using genetic analyzer. RESULTS Ovine foetal samples were processed to obtain mononuclear (MNC) cells which on culture showed spindle morphology, a characteristic oval body with the flattened ends. MSC population CD45⁻/CD14⁻ was cultured by limiting dilution to arrive at uniform spindle morphology cells and colony forming units. The cells were shown to be positive for surface markers such as CD44, CD54, integrinβ1, and intracellular collagen type I/III and fibronectin. The osteogenically induced MSCs were analyzed for alkaline phosphatase (ALP) activity and mineral deposition. The undifferentiated MSCs expressed RAB3B, candidate marker for stemness in MSCs. The osteogenically induced and uninduced MSCs expressed collagen type I and MMP13 gene in osteogenic induced cells. INTERPRETATION & CONCLUSIONS The protocol for isolation of ovine foetal bone marrow derived MSCs was simple to perform, and the cultural method of obtaining pure spindle morphology cells was established. Criteria proposed for defining MSCs by this study includes the cell adherence to culture plates, specific surface protein profiles and differentiation to osteogenic lineage. The MSCs and osteogenic differentiated cells in this ovine animal model may serve as a large source for stem cell applications in regenerative medical therapies.
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Affiliation(s)
- A. Mangala Gowri
- Department of Animal Biotechnology, Madras Veterinary College, Chennai, India,Reprint requests: Dr A. Mangala Gowri, Professor, Department of Animal Biotechnology, Madras Veterinary College, Vepery, Chennai 600 007, India e-mail:
| | - G. Kavitha
- Department of Animal Biotechnology, Madras Veterinary College, Chennai, India
| | - M. Rajasundari
- Department of Animal Biotechnology, Madras Veterinary College, Chennai, India
| | - S. Mubeen Fathima
- Department of Animal Biotechnology, Madras Veterinary College, Chennai, India
| | | | - G. Dhinakar Raj
- Department of Animal Biotechnology, Madras Veterinary College, Chennai, India
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McBride N, Carruthers S, Hutchinson D. Reducing alcohol use during pregnancy: listening to women who drink as an intervention starting point. Glob Health Promot 2012; 19:6-18. [PMID: 24801778 DOI: 10.1177/1757975912441225] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVES This study assesses factors that contribute to alcohol consumption during pregnancy and identifies potential intervention strategies to reduce consumption. METHODS The study sample includes 142 pregnant women who attended a public hospital for prenatal health care in Perth, Western Australia. All participants returned a self-completion survey. RESULTS Women who discontinued drinking during pregnancy were significantly more likely to be engaged in full time home duties and had completed less formal education. Women who continued to drink were more likely to have drunk in previous pregnancies and during the preconception period. Nearly 40% of high risk women reported a negative comment in response to their drinking. One-third of women in the risky group were advised by a health professional not to drink alcohol. Women were most likely to drink in their own home or at the home of a friend. CONCLUSIONS Participatory research with women who drink while pregnant can assist in identifying potential intervention strategies that have resonance with this group and therefore more potential for creating behaviour change. Implications. The World Health Organization recognises, and has done for over 10 years, that alcohol use during pregnancy which results in Foetal Alcohol Spectrum Disorder is the leading cause of environmental-related birth defects and mental retardation in the Western world.
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Abstract
Vasculogenesis and/or angiogenesis are thought to be the major mechanisms for new vessel formation during development. A third mechanism, haemo-vasculogenesis, has been described in which blood vessel and blood cells (haematopoiesis (expression of CD34(+)) and erythropoiesis (presence of epsilon chain of haemoglobin or Hb-epsilon(+))) differentiate from a common precursor, the haemangioblast. This review describes the mechanism(s) for development of human choroidal vascular from 6 until 22 weeks gestation (WG). Endothelial cell or EC (CD31, CD34, CD39, VEGFR-2) and angioblast (CD39, VEGFR-2) markers were present in choriocapillaris (CC) by 7 WG through 22 WG. From 6 to 8 WG, many erythroblasts (nucleated Hb-epsilon(+) RBCs) were observed in the CC layer. Erythroblasts (Hb-epsilon(+)) were also positive for CD34, CD31, and/or VEGFR-2. Proliferation of vascular cells (Ki67+), suggesting angiogenesis, was not observed until 12 WG. TEM analysis demonstrated that CC was structurally immature even at 11 WG: no basement membrane, absence of pericytes, and poorly formed lumens that were filled with filopodia. Contiguous fenestrations and significant PV-1 (protein in diaphragms of fenestrations) were not observed until 21-22 WG. Smooth muscle actin was prominent at 20 WG and the maturation of pericytes was confirmed by TEM. Therefore, the embryonic CC appears to form initially by haemo-vasculogenesis (Hb-epsilon(+)/CD31(+) cells), whereas angiogenesis (CD34(+)/Ki67(+)) appears to be the mode of intermediate and large choroidal vessel development later in the foetus. Contiguous fenestrations, mature pericytes, and EC basal lamina occur late in development, around 22 WG, which coincides with photoreceptors developing inner segments.
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Affiliation(s)
- G A Lutty
- Department of Ophthalmology, Wilmer Ophthalmological Institute, Johns Hopkins Hospital, Baltimore, MD 21287-9115, USA.
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Morecroft I, MacLean MR. Developmental changes in endothelium-dependent vasodilation and the influence of superoxide anions in perinatal rabbit pulmonary arteries. Br J Pharmacol 1998; 125:1585-93. [PMID: 9884088 PMCID: PMC1565729 DOI: 10.1038/sj.bjp.0702217] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
ACh-induced vasodilation was investigated in pulmonary arteries from 8 and 2 day pre-term foetal, neonatal (0-12 h and 4 day old) and adult rabbits. The effects of superoxide anion generation [with hypoxanthine (HX, 0.1 mM)/xanthine oxidase (XO, 15 mu ml(-1))], endogenous superoxide dismutase (SOD) inhibition [with the Cu-Zn SOD inhibitor triethylenetetramine (TETA, 1 mM)], endogenous superoxide anion scavenging [by superoxide dismutase (SOD, 50 u ml(-1))] and inhibition of endothelial nitric oxide synthase (eNOS) [with, Nomega-nitro-L-arginine methylester (L-NAME, 0.1 mM)], on basal and ACh-induced NO activity were studied by examining phenylephrine-induced contraction and ACh-induced vasodilation respectively. L-NAME and endothelium removal abolished all ACh-induced vasodilation and 1 microM sodium nitroprusside fully dilated all vessels. ACh-induced vasodilation was absent in the 8 day pre-term foetus and 0-12 h neonate but present at all other ages. L-NAME itself contracted 2 day pre-term foetal vessels. At 0 12 h, SOD, but not the phosphodiesterase 5 inhibitor zaprinast (1 microM), uncovered ACh-induced vasodilation. At this age SOD reduced phenylephrine-induced contraction which was not influenced by TETA, L-NAME or HX/XO, and L-NAME itself did not cause contraction. This suggests both ACh-induced and basal NO activity are compromise in these vessels by endogenous superoxide anion production and deficiencies in endogenous SOD activity. In 4 day vessels, but not adult vessels, L-NAME, TETA and HX/XO augmented contractions to phenylephrine, and L-NAME itself induced vasoconstriction, suggesting that basal NO and SOD activities were present by 4 days but were not evident in the adult. ACh-induced NO activity, and the influence of endogenous SOD on this, were present in the adult (and 4 day) vessels as superoxide generation with HX/XO significantly reduced ACh-induced vasodilation and this effect was inhibited by SOD and augmented by TETA. Increased oxygen tensions > 500 mmHg attenuated ACh-induced vasodilation in the foetal but not neonatal rabbits. Raising the oxygen tension from approximately 20 to approximately 120 mmHg revealed ACh-induced vasodilation in the 8 day pre-term vessels. In summary, superoxide anion accumulation combined with deficiencies in SOD activity may transiently compromise basal and ACh-induced NO activity at birth. Experimental oxygen tensions markedly influence ACh-induced vasodilation in foetal rabbit pulmonary arteries.
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Affiliation(s)
- I Morecroft
- Division of Neuroscience and Biomedical Systems, Institute of Biomedical and Life Sciences, Glasgow University
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